Don't know, don't know. These 2 kinda contradict each other
One evening after a small party, being not drunk, but definitely above legal driving limit
, I decided to play coupla hours. Result ~ +$20 (on NL10). Next 2 days playing sober and serious I lost almost all of it (you may find my report in downswing section). If you can resist the Tilt, pair of beers or drinks wouldn't break your game, at least on lower limits.